What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

United Airlines and Qantas Airways are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, United Airlines and American Airlines are the top three most popular airlines that fly to Sydney from Louisville according to our data. Qantas Airways is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of October 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$693 Cheap Flights from Louisville to Sydney in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Sydney

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:27 pm - 11:05 amSDF Louisville Intl-SYD Sydney Kingsford Smith

24h 38m2 stops Dallas/Fort Worth Brisbane

2:05 pm - 9:37 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

23h 32m1 stop Dallas/Fort Worth

$1,230Multiple Airlines

Sat, Feb 13 - Sat, Feb 20

6:27 pm - 11:05 amSDF Louisville Intl-SYD Sydney Kingsford Smith

24h 38m2 stops Dallas/Fort Worth Brisbane

2:05 pm - 9:28 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

23h 23m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,234Multiple Airlines

Sat, Feb 13 - Sat, Feb 20

6:27 pm - 11:45 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 18m2 stops Dallas/Fort Worth Brisbane

2:05 pm - 5:38 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

19h 33m1 stop Dallas/Fort Worth

$1,254Qantas Airways

Sun, Feb 28 - Tue, Mar 9

6:27 pm - 11:05 amSDF Louisville Intl-SYD Sydney Kingsford Smith

24h 38m2 stops Dallas/Fort Worth Brisbane

2:05 pm - 5:38 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

19h 33m1 stop Dallas/Fort Worth

$1,268Qantas Airways

Sat, Feb 27 - Wed, Mar 10

3:35 pm - 7:00 amSDF Louisville Intl-SYD Sydney Kingsford Smith

23h 25m1 stop Houston George Bush Intcntl

11:20 am - 6:17 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

22h 57m2 stops Los Angeles Chicago O'Hare Intl

$1,451United Airlines

Wed, Dec 2 - Wed, Dec 9

1:59 pm - 7:00 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 01m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

11:20 am - 6:17 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

22h 57m2 stops Los Angeles Chicago O'Hare Intl

$1,451United Airlines

Wed, Dec 2 - Wed, Dec 9

5:45 pm - 6:50 amSDF Louisville Intl-SYD Sydney Kingsford Smith

45h 05m2 stops Atlanta Hartsfield-Jackson Los Angeles

10:40 am - 12:02 amSYD Sydney Kingsford Smith-SDF Louisville Intl

29h 22m2 stops Los Angeles Atlanta Hartsfield-Jackson

$1,451Delta

Sat, Feb 27 - Tue, Mar 9

5:45 pm - 6:50 amSDF Louisville Intl-SYD Sydney Kingsford Smith

45h 05m2 stops Atlanta Hartsfield-Jackson Los Angeles

10:40 am - 4:51 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

22h 11m2 stops Los Angeles Atlanta Hartsfield-Jackson

$1,451Delta

Sat, Feb 27 - Wed, Mar 10

5:45 pm - 6:50 amSDF Louisville Intl-SYD Sydney Kingsford Smith

45h 05m2 stops Atlanta Hartsfield-Jackson Los Angeles

10:40 am - 9:41 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

27h 01m2 stops Los Angeles Detroit Metropolitan Wayne County

$1,451Delta

Sat, Feb 27 - Mon, Mar 8

3:27 pm - 9:20 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 53m2 stops Denver Intl San Francisco

11:50 am - 6:29 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

22h 39m2 stops San Francisco Chicago O'Hare Intl

$1,452United Airlines

Wed, Jan 20 - Wed, Jan 27

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Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Feb 28

SDF6:27 pmLouisville Intl

25h 18m

2 stops

SYD11:45 amSydney Kingsford Smith

Mar 9

SYD2:05 pmSydney Kingsford Smith

19h 33m

1 stop

SDF5:38 pmLouisville Intl

$1,254

Qantas Airways

Feb 27

SDF6:27 pmLouisville Intl

29h 43m

2 stops

SYD4:10 pmSydney Kingsford Smith

Mar 8

SYD2:05 pmSydney Kingsford Smith

19h 33m

1 stop

SDF5:38 pmLouisville Intl

$1,268

Qantas Airways

Jan 20

SDF4:08 pmLouisville Intl

33h 52m

2 stops

SYD6:00 pmSydney Kingsford Smith

Jan 27

SYD2:05 pmSydney Kingsford Smith

22h 29m

1 stop

SDF8:34 pmLouisville Intl

$1,309

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

United Airlines

Jan 20

SDF3:27 pmLouisville Intl

25h 53m

2 stops

SYD9:20 amSydney Kingsford Smith

Jan 27

SYD11:50 amSydney Kingsford Smith

22h 39m

2 stops

SDF6:29 pmLouisville Intl

$1,452

United Airlines

Feb 25

SDF9:32 amLouisville Intl

29h 28m

1 stop

SYD7:00 amSydney Kingsford Smith

Mar 8

SYD9:15 amSydney Kingsford Smith

27h 41m

1 stop

SDF8:56 pmLouisville Intl

$1,496

United Airlines

Feb 25

SDF1:55 pmLouisville Intl

27h 10m

2 stops

SYD9:05 amSydney Kingsford Smith

Mar 10

SYD9:15 amSydney Kingsford Smith

20h 18m

1 stop

SDF1:33 pmLouisville Intl

$1,501

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 2/13

6:27 pm-11:05 am

2 stops24h 38m

Sydney Kingsford Smith

Sat 2/20

2:05 pm-9:37 pm

1 stop23h 32m

$1,230

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 2/13

6:27 pm-11:05 am

2 stops24h 38m

Sydney Kingsford Smith

Sat 2/20

2:05 pm-9:28 pm

2 stops23h 23m

$1,234

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sun 2/28

6:27 pm-11:45 am

2 stops25h 18m

Sydney Kingsford Smith

Tue 3/9

2:05 pm-5:38 pm

1 stop19h 33m

$1,254

Quickest round-trip

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 2/27

6:27 pm-11:05 am

2 stops24h 38m

Sydney Kingsford Smith

Wed 3/10

2:05 pm-5:38 pm

1 stop19h 33m

$1,268

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Wed 12/2

3:35 pm-7:00 am

1 stop23h 25m

Sydney Kingsford Smith

Wed 12/9

11:20 am-6:17 pm

2 stops22h 57m

$1,451

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Wed 12/2

1:59 pm-7:00 am

2 stops25h 01m

Sydney Kingsford Smith

Wed 12/9

11:20 am-6:17 pm

2 stops22h 57m

$1,451

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 2/27

5:45 pm-6:50 am

2 stops45h 05m

Sydney Kingsford Smith

Tue 3/9

10:40 am-12:02 am

2 stops29h 22m

$1,451

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 2/27

5:45 pm-6:50 am

2 stops45h 05m

Sydney Kingsford Smith

Wed 3/10

10:40 am-4:51 pm

2 stops22h 11m

$1,451

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 2/27

5:45 pm-6:50 am

2 stops45h 05m

Sydney Kingsford Smith

Mon 3/8

10:40 am-9:41 pm

2 stops27h 01m

$1,451

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Wed 1/20

3:27 pm-9:20 am

2 stops25h 53m

Sydney Kingsford Smith

Wed 1/27

11:50 am-6:29 pm

2 stops22h 39m

$1,452

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Sydney?

In general, August is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,191. If you are unable to visit Sydney during the month of August, then departing from Louisville during the month June is also very affordable. Most momondo users find prices during this month for around $1,260.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 7% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Best Price Found	$693
Fastest flight time	23h 37m
Direct flights	None

The best one-way flight to Sydney from Louisville in the past 72 hours is $693. The best round-trip flight deal from Louisville to Sydney found on momondo in the last 72 hours is $1,230.

The fastest flight from Louisville to Sydney takes 23h 37m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

Frequently asked questions about flying from Louisville to Sydney

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 37m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of October 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (66% of total bookings). The next most popular airline is Delta (34%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $1,140	Free Cancellation	Rating 7.8 8,652 reviews		Search Delta flights
United Airlines	PriceFrom $1,243	Free Cancellation	Rating 7.3 10,388 reviews		Search United Airlines flights

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Leura

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Manly

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Lithgow

Charlestown

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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Cheap flights from Louisville to Sydney from $693

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 3/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

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How to get the cheapest flight ticket from Louisville to Sydney

What is the cheapest month to fly to Sydney?

Can stopping save me money on Louisville to Sydney flights?

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Louisville to Sydney

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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